Spraying-nozzle for internal-combustion engines.



C. E. H. LLOYD. SPRAYING NOZZLE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR-8,1918.

Patented; Apr. 22, 1919.

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To all whom, it may concern:

Be it known that 1, CHARLES E. H. LLOYD, a citizeniof-the United States, residing at Los Angeles, in the county oi Los Angeles and State of California, have invented new and useful Improvements in Spraying-Nozzles for Internal-Combustion Engines, of which the following is a specification.

My invention-relates to a device for feeding or spraying oil under pressure and discharging the same into the ignition chamber of an internal combustion engine, and particularly to a device adapted to feed the 1 "a losure' rod 18 ,the outer end thereof being 70 A main object of my invention is to proheavier distillates of petroleum.

vide an atomizing discharge nozzle'which may be readily regulated to suit the pressure at which the-oil is delivered thereto.

' Another object of my invention is to'efiect a substantially perfect atomization and distribution of hydro-carbon oils at each injection, whereby to efiect a more perfect and instantaneous combustion, without the usual carbonization within-the ignition chamber.

A still furtherobject is to provide a sim ple oil spraying device for an outlet orifice controlled a spring closure, in which the tension of the spring controlling the closure may be increased or diminished according to the oil pressure delivered to the injector.

A further object is to provide a device in which the outlet orifice, which is normally closed, 'willbe instantly opened on the introduction of oilunder pressure.

' I accomplish the above objects by means of the device herein described and illustrated --'in-the.following drawings, in which: Figure 1 is a central longitudinal section through my complete device showingit at- I device taken on line 2-2 of Fig.

tached to a wall of the ignition chamber.

Fig. .2 is a transverse section through the 1. The invention illustrated in t e drawings preferably consists of an elongated body member 5 having. a central bore 6 of uniform diameter extending throughout its entire length. The extreme outer end of member 5 hollow nozzle cap 7 provided with a centrallydisposed outlet orifice 8 of minute to insure a liquid tightjoint. Member 5 directly back of its reducedj portion is externally threaded as at 10 for securing sa d Specification of Letters Patent.

Application filed April 8, 191a Serial n. 227,293.

is of reduced external diameter, and the end I of bore 6 is'threaded' for the reception of a Patented Apr. 22, 1919.

member in rigid engagement with the threaded opening formed in the wall of the lgnition chamber of the engine. The end of member 5'opposite its nozzle end is of an enlarged diameter as at 12, and is provided with radial bore 13 for the reception of an oil inlet pipe (not shown). The" end of member 5 opposite its nozzle is flanged as at 15 for the reception of a hollow flanged cap 1 6 which is secured to flange15 of member 5 by means of cap screws 17 or other suitable securing means.

Slida-bly mounted in bore 6of member 5 is of reduced diameter so as to loosely fit the bore of the nozzle cap 7 to permit of a flow of oil to the nozzle orifice, the extreme end of saidrod being-provided with a ball 20 adapted to normally close orifice 8 of the nozzle. i

Mounted on the reduced outer end of closure rod 18,.and inter osed between. the inner end of nozzle cap and the shoulder 21 formed by the reduced end of rod 18, is atudinally disposed semi-circular oil inlet Q grooves 23, through which oil is introduced to the outer end of member 5. The rear end of rod 18 is partially spherical in form and contacts with a circular metallic diaphragm 24 clamped between the flange 15 of member 5 and the flange cap 16, the diaphragm pre:

formed in the flangecap 16.

The flanged end of member 5 is provided with an annular recess 25, and the flanged end of nozzle cap 16 is also recessed as at 26, the two recesses 25 and 26 permitt' movement of the diaphragm 24 when r0 18 is moved rearwardly to unseat the ball from its orifice. I

Mounted in recess 27 of flange cap 161s a coil spring 28, the tension of said spring bev105 ing normally greater than the tension of spring 22 mounted on the forward end of -rod-18, mounted in the ends of the spring 22 are buttons 29 and 30, button 29 hearing against the diaphragm 24 while the head of no button 30 contacts with the end of a set screw 31. By means of thls set ewe-w the The rear portion of 5 venting the entrance of oil into the recess tension on spring 28 may be increased or diminished according to the pressure at which the oil is admitted through inlet bore 13.

The operation of my improved nozzle will be clearly apparent from the following description: The nozzle is first screwed into the Wall of the ignition chamber of .the engine and oil introduced under a suitable pressure, the oil being forced intermittently intoithe nozzle. As the oil enters the nozzle under pressure, it fills chamber or recess 25 at the outer end of member 5 so as to force the diaphragm and the ring 28 rearw'ardly, this permitting spring 22 to force rod 18 rearwardly and unseat the ball from the outlet orifice. The moment the ball is unseated the oil rushes through the outlet orifice under pressure and sprays or atomizes the oil in a mistlike spray. As soon as the pressure is relieved, spring 28 will overcome the action of spring 22 and again, seat the ball until another charge of oil is introduced.

By means of setscrew 31 I am enabled to control the tension of the spring according to the pressure of the oil delivered to the nozzle. 7

What I claim is:

1. In a spraying nozzle, a hollow nozzle member having a fluid inlet leading thereto and a fluid outlet leading therefrom, a valve mounted in said member, a spring bearing against said valve to normally close said fluid outlet, and a spring of less tension than the first named spring to actuate said valve to open said outlet when the tension of the first named spring is overcome, the tension of said spring being overcome by the introduction of a fluid under pressure to said nozzle member.

2. In a spraying nozzle, a hollow nozzle member having a fluid inlet leading thereto and a fluid outlet leadin therefrom, a reciprocating valve mounte in said member, resilient means cooperatinowith said valve to seat the same in the fluid outlet opening, and resilient means to retract said valve to open said outlet when said first-named resilient means is rendered inoperative. I

3. An oil spraying nozzle, comprising a nozzle member provided with a centrally disposed bore and having a fluid inlet leading to said bore and a fluid outlet leading therefrom, a valve means for controlling said fluid outlet, resilient means bearing against said valve means to normally maintain the fluid outlet in a closed condition, and resilient means to actuate said valve means to open said outlet on the introduction to said nozzle member of a fluid under pressure.

a. In a sprayin nozzle, a nozzle member having a centrally disposed bore therein terminating at the outer end in an oil outlet orifice, said nozzle adapted to be secured in the wall of an ignition chamber of an engine, said member being further provided with an oil inlet opening in its bore, a recessed cap secured to the inner end of said nozzle member, a metallic diaphragm secured between the nozzle member and said recessed cap, a closure rod having oil ways communicating with the outlet end of said nozzle member mounted in the bore of said nozzle member, a resilient means acting on said rod to unseat the same at intervals, a resilient means mounted in the recessed cap member and normally bearing against the clo sure rod to cloes the outlet orifice in the nozzle member, and means to increase or diminish the tension of said last named resilient means.

5. In a spraying nozzle, a hollow nozzle member having a fluid inlet leading thereto and a fluid outlet leading therefrom, a valve.

closure rod having a plurality of longitudinal grooves therein and a reduced outer portion mounted in said nozzle member, said grooves extending from the larger end of said rod to the reduced end thereof, an interior shoulder formed within said nozzle member adjacent the end thereof, a coil spring mounted on the'reduced end of said rod between the shoulder formed within the outerrend of the nozzle member and the shoulder formed by the reduced end of the rod, the outer end of said rod closing said outlet, a, metallic diaphragm mounted on said nozzle member on the inner end thereof and bearing against the outer end of said rod, a

spring of greater tension than the spring mounted on the rod bearing against said diaphragm to force said rod forwardly'and close said outlet opening, and means to increase or diminish the tension of said last named spring, the said first named spring adapted to unseat the outlet closure rod on the admission of a fluid under pressure to said nozzle .member, said fluid overcoming the tension of the last named spring.

In witness that I claim the foregoing I have hereunto subscribed my name this 25th day of March, 1918.

CHAS. E. H. LLOYD. 

